Aquarium Temperature Control

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A sea-riously important pair of kit for fish owners, a quality heater and thermometer will help you to replicate the natural water that your aquatic friends are accustomed to - without the fuss! OnBuy has a brilliant array of options available, so delve in and create the perfect haven for your pets. Read More >

About Aquarium Temperature Control

The majority of tropical fish require a stable temperature of between 24-27°C to remain healthy and stress-free. Effective aquarium heaters and thermometers are essential when you’re looking to keep fish that require a higher water temperature than the air around the fish tank.

With OnBuy’s extensive collection of fish tank heaters and thermometers, you’ll be able to ensure that a constant temperature is maintained throughout your fish tank, meaning that your aquatic friends will be protected against shock and any potential diseases.

Aquarium thermometers

Your fish tank may look fine from the outside, but how do know of any temperature changes, and how these can affect your fish? With one of OnBuy’s fish tank thermometers - that’s how!

Showcasing a plethora of options - from digital fish tank thermometers to stick-on fish tank thermometers - our range will have you kitted out in just a few clicks…

Browse the collection to find traditional glass fish tank thermometers; whether you choose one that attaches to your stank via a clip, or prefer one of our floating fish tank thermometers, these easy-to-read accessories will give you extra peace of mind and allow you to check up on your aquarium whenever you want.

We've also got plenty of external fish tank heaters on our virtual shelves. With a range of wattages on offer, you'll find options that you can hang these over the side or back of the tank, making them ideal for keeping the aesthetics of your tank intact while still making sure your fish are healthy.